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Related Concept Videos

Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
Other Pulmonary Disorders01:17

Other Pulmonary Disorders

Respiratory disorders encompass a range of conditions with varying levels of severity. Asthma, marked by chronic airway inflammation and hypersensitivity, is one such condition. It can lead to airway obstruction due to factors like bronchial spasms, mucosal edema, increased mucus secretion, or epithelial damage. Asthma triggers are diverse, ranging from allergens to emotional upset, and treatment focuses on both immediate relief through bronchodilators and long-term inflammation suppression.
Chronic Inflammation: Introduction01:12

Chronic Inflammation: Introduction

Chronic inflammation is a prolonged, dysregulated immune response that persists for weeks to years when the inciting stimulus is difficult to eradicate or when self‑antigens drive ongoing reactivity. Morphologically, it is defined by mononuclear cell infiltration, progressive tissue destruction, and concurrent attempts at healing via angiogenesis and fibrosis. Compared with acute inflammation, edema is less prominent while cellular infiltration predominates; triggers include persistent...
Pneumonia II: Pathophysiology01:29

Pneumonia II: Pathophysiology

The pathophysiology of pneumonia involves the following steps:
Chronic Obstructive Pulmonary Disease-III: Symptoms and Complications.01:25

Chronic Obstructive Pulmonary Disease-III: Symptoms and Complications.

Understanding the variety of primary symptoms and systemic complications that characterize chronic obstructive pulmonary disease (COPD) is crucial for healthcare professionals.
Symptoms of COPD can be classified as primary or systemic. Primary symptoms relate to reduced airflow, while systemic or extrapulmonary symptoms relate to COPD's broader impact on the body.
Primary Symptoms of COPD:

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Related Experiment Video

Updated: May 13, 2026

A Novel Microdissection Approach to Recovering Mycobacterium tuberculosis Specific Transcripts from Formalin Fixed Paraffin Embedded Lung Granulomas
07:42

A Novel Microdissection Approach to Recovering Mycobacterium tuberculosis Specific Transcripts from Formalin Fixed Paraffin Embedded Lung Granulomas

Published on: June 5, 2014

[Granulomatous lung and systemic diseases].

A Prasse1, G Kayser, J Müller-Quernheim

  • 1Abteilung für Pneumologie, Universitätsklinikum Freiburg, Freiburg im Breisgau.

Der Internist
|March 7, 2013
PubMed
Summary

Granuloma formation is an immune response to persistent particles, primarily evolved to contain mycobacteria. This process can lead to various granulomatous lung diseases, including sarcoidosis, autoimmune conditions, and occupational lung diseases.

Area of Science:

  • Immunology
  • Pulmonology
  • Pathology

Context:

  • Granuloma formation is a defense mechanism against persistent, uneliminable particles within phagocytes.
  • This immune response evolved to localize and prevent the spread of pathogens like mycobacteria.
  • Granulomatous lung diseases often present with systemic inflammation, though acute phase proteins may show minimal elevation.

Purpose:

  • To provide a comprehensive overview of granuloma formation and its association with diverse lung diseases.
  • To highlight the differential diagnosis of granulomatous lung diseases, emphasizing the exclusion of infectious causes like tuberculosis.
  • To explore the etiological spectrum of pulmonary granulomas, encompassing autoimmune disorders, immunodeficiencies, and occupational exposures.

Summary:

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Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease

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A 3D Human Lung Tissue Model for Functional Studies on Mycobacterium tuberculosis Infection
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A 3D Human Lung Tissue Model for Functional Studies on Mycobacterium tuberculosis Infection

Published on: October 5, 2015

Related Experiment Videos

Last Updated: May 13, 2026

A Novel Microdissection Approach to Recovering Mycobacterium tuberculosis Specific Transcripts from Formalin Fixed Paraffin Embedded Lung Granulomas
07:42

A Novel Microdissection Approach to Recovering Mycobacterium tuberculosis Specific Transcripts from Formalin Fixed Paraffin Embedded Lung Granulomas

Published on: June 5, 2014

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
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Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease

Published on: June 16, 2020

A 3D Human Lung Tissue Model for Functional Studies on Mycobacterium tuberculosis Infection
10:10

A 3D Human Lung Tissue Model for Functional Studies on Mycobacterium tuberculosis Infection

Published on: October 5, 2015

  • Granuloma formation is a key immune process, crucial for containing persistent intracellular pathogens but also implicated in various lung pathologies.
  • Sarcoidosis is the most prevalent granulomatous lung disease, necessitating the exclusion of infectious etiologies such as tuberculosis and fungal infections.
  • Pulmonary granulomas arise from autoimmune diseases (e.g., rheumatoid arthritis, GPA, EGPA), immunodeficiencies (e.g., CVID, HIV-associated syndromes), and occupational exposures (e.g., hypersensitivity pneumonitis, silicosis).

    • Impact:

    • Enhances understanding of the complex pathophysiology underlying granulomatous lung diseases.
    • Aids clinicians in the differential diagnosis and management of patients presenting with granulomatous lung conditions.
    • Provides a foundation for further research into targeted therapies for specific granulomatous lung diseases.